Earthquake with magnitude of ML 2.0 on date 17-12-2020 and time 23:51:06 (Italy) in region 6 km SW Villalago (AQ)

A magnitude ML 2.0 earthquake occured in region: 6 km SW Villalago (AQ), on

  • 17-12-2020 22:51:06 (UTC)
  • 17-12-2020 23:51:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.89, 13.81 at 15 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Villalago AQ 6 568 568
Bisegna AQ 6 223 791
Scanno AQ 6 1847 2638
Pescasseroli AQ 9 2203 4841
Lecce nei Marsi AQ 12 1702 6543
Anversa degli Abruzzi AQ 12 341 6884
Gioia dei Marsi AQ 12 1989 8873
Opi AQ 12 420 9293
Ortona dei Marsi AQ 14 542 9835
Rocca Pia AQ 15 178 10013
Introdacqua AQ 15 2126 12139
Pettorano sul Gizio AQ 15 1376 13515
Bugnara AQ 15 1125 14640
Ortucchio AQ 16 1860 16500
Villetta Barrea AQ 16 653 17153
Villavallelonga AQ 16 919 18072
Cocullo AQ 16 230 18302
Civitella Alfedena AQ 17 296 18598
Prezza AQ 19 945 19543
Collelongo AQ 19 1233 20776
Pescina AQ 20 4133 24909
Sulmona AQ 20 24557 49466

Municipalities with at least 50000 inhabitants

An earthquake occurred to
59 Km SW of Chieti (51815 inhabitants)
62 Km SE of L'Aquila (69753 inhabitants)
72 Km SW of Pescara (121014 inhabitants)
75 Km SW of Montesilvano (53738 inhabitants)
84 Km E of Tivoli (56533 inhabitants)
86 Km S of Teramo (54892 inhabitants)
89 Km E of Velletri (53303 inhabitants)
89 Km NE of Latina (125985 inhabitants)
91 Km E of Guidonia Montecelio (88673 inhabitants)
100 Km NW of Caserta (76326 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985 *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire *

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 2.0 2020-12-17
22:51:06
41.89 13.81 15 2021-02-26
14:56:14
Bollettino Sismico Italiano INGV 86170031
Reviewed
Rev100
ML 2.0 2020-12-17
22:51:06
41.89 13.82 16 2020-12-17
22:56:46
Sala Sismica INGV-Roma 85502951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-17 22:51:06 ± 0.05
Latitude 41.89 ± 0.00
Longitude 13.81 ± 0.00
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86170031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 329
Semi-minor axis of confidence ellipse (meter) 66
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 107
Circular confidence region, given by single value of horizontal uncertainty (meter) 330
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.74824
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 48
Type of magnitude ML
Reference to an origin 86170031
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-11 11:34:06

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 48
Type of magnitude ML
Reference to an origin 85502951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-17 22:56:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SGRT.HHZ. 2020-12-17T22:51:33.83 3.0 positive manual Pg 2.94 0
IV.TERO.HHZ. 2020-12-17T22:51:31.96 0.3 undecidable manual S 348 0.7482 93 0.53 59
IV.CRTO.HHZ. 2020-12-17T22:51:27.85 3.0 undecidable manual P 0.73 0
IV.MELA.HHZ. 2020-12-17T22:51:24.35 3.0 negative manual P -0.39 0
IV.VCEL.EHZ. 2020-12-17T22:51:24.82 0.3 undecidable manual S 2 0.5045 95 0.6 61
IV.MIDA.HHZ. 2020-12-17T22:51:22.07 0.3 undecidable manual S 127 0.4119 97 0.58 61
IV.TERO.HHZ. 2020-12-17T22:51:20.60 0.3 undecidable manual P 348 0.7482 93 -0.41 61
IV.GUAR.HHZ. 2020-12-17T22:51:20.94 0.3 undecidable manual S 256 0.3849 97 0.23 68
IV.PTQR.HHZ. 2020-12-17T22:51:19.53 0.3 undecidable manual S 293 0.3336 99 0.33 68
IV.T0110.HHN. 2020-12-17T22:51:19.77 0.3 undecidable manual S 355 0.3399 99 0.39 67
IV.CERA.HHZ. 2020-12-17T22:51:19.18 0.3 undecidable manual S 152 0.3301 99 0.1 70
IV.LRP.EHZ. 2020-12-17T22:51:18.38 0.3 undecidable manual S 215 0.2959 101 0.28 69
IV.RNI2.HHZ. 2020-12-17T22:51:18.91 0.3 undecidable manual S 126 0.3139 100 0.28 68
IV.LPEL.HHZ. 2020-12-17T22:51:18.86 0.3 undecidable manual S 60 0.3166 100 0.18 70
IV.TRIV.HHZ. 2020-12-17T22:51:17.81 0.3 undecidable manual P 102 0.5621 94 -0.02 69
IV.GIUL.HHZ. 2020-12-17T22:51:17.07 0.1 positive manual P 232 0.5324 95 -0.26 88
IV.GIGS.HHE. 2020-12-17T22:51:17.81 0.3 undecidable manual P 342 0.59 94 -0.5 62
IV.VCEL.EHZ. 2020-12-17T22:51:16.74 0.1 positive manual P 2 0.5045 95 -0.1 91
IT.SULP.HGZ. 2020-12-17T22:51:15.65 0.1 undecidable manual S 23 0.2122 108 -0.04 98
IV.LIK.EHN.01 2020-12-17T22:51:15.93 0.3 undecidable manual P 206 0.4344 96 0.28 67
IT.SULA.HNZ. 2020-12-17T22:51:15.41 0.6 undecidable manual S 23 0.1988 110 0.11 49
IV.MIDA.HHZ. 2020-12-17T22:51:14.91 0.1 positive manual P 127 0.4119 97 -0.36 89
IV.GUAR.HHZ. 2020-12-17T22:51:14.50 0.1 undecidable manual P 256 0.3849 97 -0.32 89
IV.POFI.HHZ. 2020-12-17T22:51:14.96 0.3 undecidable manual S 204 0.1889 111 -0.06 73
IV.MCI.EHZ. 2020-12-17T22:51:14.93 0.3 undecidable manual P 180 0.3993 97 -0.12 70
IT.SULC.HNZ. 2020-12-17T22:51:14.91 0.3 undecidable manual S 22 0.1916 111 -0.19 71
IV.VVLD.HNZ. 2020-12-17T22:51:13.96 0.3 undecidable manual S 262 0.143 121 0.15 73
IV.CERA.HHZ. 2020-12-17T22:51:13.60 0.1 undecidable manual P 152 0.3301 99 -0.28 92
IV.PTQR.HHZ. 2020-12-17T22:51:13.85 0.1 positive manual P 293 0.3336 99 -0.1 94
IT.OPI.HGZ. 2020-12-17T22:51:13.18 0.1 undecidable manual S 174 0.1142 130 0.05 99
IV.LRP.EHZ. 2020-12-17T22:51:13.19 0.1 positive manual P 215 0.2959 101 -0.12 95
IV.RNI2.HHZ. 2020-12-17T22:51:13.85 0.1 positive manual P 126 0.3139 100 0.24 92
IV.INTR.HNZ. 2020-12-17T22:51:13.59 0.3 undecidable manual S 29 0.1385 122 -0.11 73
IV.LPEL.HHZ. 2020-12-17T22:51:13.29 0.1 positive manual P 60 0.3166 100 -0.36 90
IV.T0110.HHN. 2020-12-17T22:51:13.90 0.1 negative manual P 355 0.3399 99 -0.16 93
IT.SULA.HNZ. 2020-12-17T22:51:11.65 0.1 undecidable manual P 23 0.1988 110 -0.05 98
IV.VVLD.HNZ. 2020-12-17T22:51:11.00 0.1 positive manual P 262 0.143 121 0.16 97
IT.SULP.HGZ. 2020-12-17T22:51:11.73 0.1 positive manual P 23 0.2122 108 -0.19 95
IV.POFI.HHZ. 2020-12-17T22:51:11.55 0.1 positive manual P 204 0.1889 111 0.01 99
IT.SULC.HNZ. 2020-12-17T22:51:11.55 0.3 undecidable manual P 22 0.1916 111 -0.03 74
IV.INTR.HNZ. 2020-12-17T22:51:10.78 0.1 positive manual P 29 0.1385 122 0 100
IT.OPI.HGZ. 2020-12-17T22:51:10.50 0.1 negative manual P 174 0.1142 130 0.06 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.INTR.HHE. ML:2.6 0.003445 0.54 AML other m 2020-12-17T22:51:13.69
IV.INTR.HNE. ML:2.6 0.0032 0.54 AML other m 2020-12-17T22:51:13.69
IV.VVLD.HHE. ML:2.4 0.002035 0.72 AML other m 2020-12-17T22:51:14.04
IV.VVLD.HNE. ML:2.4 0.00188 0.72 AML other m 2020-12-17T22:51:14.05
IV.INTR.HNN. ML:2.5 0.00258 0.26 AML other m 2020-12-17T22:51:14.18
IV.INTR.HHN. ML:2.6 0.002785 0.26 AML other m 2020-12-17T22:51:14.18
IV.VVLD.HHN. ML:2.4 0.00214 0.4 AML other m 2020-12-17T22:51:14.15
IV.VVLD.HNN. ML:2.4 0.002 0.4 AML other m 2020-12-17T22:51:14.15
IV.POFI.HHN. ML:2 0.000549 0.18 AML other m 2020-12-17T22:51:15.77
IV.POFI.HNN. ML:2 0.000631 0.18 AML other m 2020-12-17T22:51:15.78
IV.POFI.HHE. ML:2 0.0006875 0.42 AML other m 2020-12-17T22:51:16.01
IV.POFI.HNE. ML:2.1 0.0007785 0.42 AML other m 2020-12-17T22:51:16.02
IV.LRP.EHE. ML:2.1 0.000511 0.38 AML other m 2020-12-17T22:51:18.54
IV.LPEL.HNN. ML:2.1 0.0005255 0.82 AML other m 2020-12-17T22:51:19.45
IV.LPEL.HHN. ML:2.1 0.000544 0.82 AML other m 2020-12-17T22:51:19.45
IV.LRP.EHN. ML:1.6 0.0001525 0.82 AML other m 2020-12-17T22:51:19.25
IV.CERA.HHN. ML:1.9 0.000265 0.22 AML other m 2020-12-17T22:51:20.21
IV.PTQR.HHE. ML:1.6 0.000141 0.44 AML other m 2020-12-17T22:51:20.18
IV.LPEL.HHE. ML:2.4 0.000885 0.46 AML other m 2020-12-17T22:51:20.83
IV.LPEL.HNE. ML:2.3 0.0007395 0.46 AML other m 2020-12-17T22:51:20.83
IV.RNI2.HNE. ML:2.1 0.0005325 0.16 AML other m 2020-12-17T22:51:20.82
IV.RNI2.HHE. ML:2.2 0.0005575 0.16 AML other m 2020-12-17T22:51:20.82
IV.CERA.HNN. ML:1.9 0.0003005 0.96 AML other m 2020-12-17T22:51:21.16
IV.RNI2.HHN. ML:2 0.0003915 0.48 AML other m 2020-12-17T22:51:21.57
IV.RNI2.HNN. ML:2 0.000379 0.48 AML other m 2020-12-17T22:51:21.57
IV.MIDA.HNN. ML:2 0.0002835 1.2 AML other m 2020-12-17T22:51:22.31
IV.MIDA.HHE. ML:2.1 0.000335 1.2 AML other m 2020-12-17T22:51:22.31
IV.MIDA.HNE. ML:2 0.000281 0.92 AML other m 2020-12-17T22:51:22.33
IV.PTQR.HHN. ML:1.6 0.000148 1.58 AML other m 2020-12-17T22:51:23.00
IV.MIDA.HHN. ML:2 0.0002985 0.16 AML other m 2020-12-17T22:51:23.16
IV.CERA.HHE. ML:1.8 0.000204 0.62 AML other m 2020-12-17T22:51:23.83
IV.CERA.HNE. ML:1.8 0.00024 0.62 AML other m 2020-12-17T22:51:23.83
IV.MCI.EHN. ML:2 0.00027 0.28 AML other m 2020-12-17T22:51:23.61
IV.GUAR.HHE. ML:1.8 0.000198 1.04 AML other m 2020-12-17T22:51:24.20
IV.GUAR.HHN. ML:2.1 0.000369 0.4 AML other m 2020-12-17T22:51:25.23
IV.VCEL.EHN. ML:2.1 0.0002965 0.44 AML other m 2020-12-17T22:51:25.56
IV.MCI.EHE. ML:2.1 0.0003425 0.64 AML other m 2020-12-17T22:51:25.26
IV.VCEL.EHE. ML:2.3 0.000422 0.28 AML other m 2020-12-17T22:51:25.60
IV.CRTO.HHN. ML:2.8 0.0004585 1.48 AML other m 2020-12-17T22:51:29.04
IV.GIUL.HHN. ML:1.7 0.00010025 1.4 AML other m 2020-12-17T22:51:30.86
IV.CRTO.HHE. ML:2.8 0.0004675 0.72 AML other m 2020-12-17T22:51:30.13
IV.GIUL.HHE. ML:1.6 8.965E-5 1.12 AML other m 2020-12-17T22:51:31.73
IV.TERO.HHE. ML:1.5 4.065E-5 0.28 AML other m 2020-12-17T22:51:33.15
IV.TRIV.HHN. ML:1.5 6.575E-5 1.56 AML other m 2020-12-17T22:51:36.96
IV.TERO.HHN. ML:1.5 4.21E-5 0.78 AML other m 2020-12-17T22:51:36.45
IV.TRIV.HHE. ML:1.5 6.515E-5 0.38 AML other m 2020-12-17T22:51:39.43
IV.MELA.HHE. ML:1.8 5.885E-5 0.78 AML other m 2020-12-17T22:51:44.88
IV.MELA.HHN. ML:1.8 5.945E-5 0.62 AML other m 2020-12-17T22:51:45.32
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in full SEED format Download